A8 is basically A2 (a common cutlery steel) modified for greater toughness at the cost of wear resistance, a very sensible tradeoff on a heavy duty knife.

• 看到下面一句，A8是A2的改进型，以降低抗磨损能力为代价换取了更强的韧性，写文章的人认为这样更适合用做大型刀具：